Concrete form supporting device



June 6, 1933. w CQPESTAKE 1,913,070

CONCRETE FORM SUPPORTING DEVICE Patented June 6, 1933 wIL IAnfle. cornsmnn; or jnnwamr, NEW JERSEYL nssrenoa To eoncan'rrz CONSTRUG'JJION Accnssoruns 00., or mvmeron, nEw Eas Y condemn roam swsoema sam lvlyinventionjrelates to improvements in supports or hangers for concretebuilding forms and more particularlyflto-means for H adjustably and releasably supporting; and

spacing parallelseries of adj acentpan-shaped metal forms such as are used inthe construction of concrete floors having exposed integraljoiStsM i i ,In the construction for concrete floors of buidings it IS thepractice to supporttrans verse seriesof Wooden joists/upon shores which are erected betWee-nthe -floorlevels for the purpose of removably supporting I metal floor forms, the

1s a a a a p a s To uniformly supportthe form pans in,

* pan-shaped. a

horizontalspaced rows extending from one floor girder to another, long furrmg strips are usually nalled to the opposite sidettaces of the joists and separator strips or spreaders are rested at intervals upon the fur-ring strips tduniformly space the joists andprovide supports for the sideh'edges of the' pans. Such a construction of alljwoodenfalse Work the form panslbut the costs incident to as sembling and disassembling of the Wooden supports to dropthe'pans, due to the waste of time and materials during such operations,

a make the use of such a construction prohibi tive on many jobs' spacers; various formsof metal hangers on which the pans may be adjustably sup ported. Whilesuch metal hangers have overf come certain disadvantages of the'all wooden 40 construction by providing means which a be repeatedly used and adjusted toa degree to meet the requirements :of such use; they have however been characterized b'yanelaborate arrangement of partsexpensive to manufacture and time consuming and wasteful to forms being usually a a y y i i i i v -A further ob ect of my invention isto prohas proven adequate for properlysupporting 1952, f s 'er ial No. 606,972. l

assemble and disassemble for repeated use on a job; Such prior art devices have further required the removal of se-veral parts: orthe total destruction of such parts. in order to dropithe form pans and reassemble the parts forrepeated use. 1

It is, therefore, the primary object of my invention to eliminate such faults and disadvantages as polnted outabove and to provide a-simple, compact and reliable hanger which maybe economically manufactured and repeatedly usedwithout the loss of time and materialscommon to the use of such prior art devices;

work and which is so constructed as to permit readyre-moval ofthe supporting elements to drop the pans after the concrete is set Without 1 mutilation of {any formorits support. a e a i A; still further object of my invention is to provide a-h angerinember whichma-y beread ily mounted upon and adjusted along'asupporting joist, said member having spaced portion of the pan means for late-rally receiving. and vertically and transversely bracing one o r-more pan form V supportlng elements. 1

Another object of my inventionrelatesto adjustable pan form supporting means, of

thecharacter described with which maybe combined a spreader, the supporting means and spreader being operable as a unit inthe' operations of assembhngpanforms upon or releaslng them from the falsework.

e l Lnot-herobjct of myinvention is to pro vide ahanger and spreader of thecharacter be hich maybe economically ID311111- factured and wh c will require the minimum of time and labor in its application to and removal from the form supporting joistsof the false-work fReferring now to the accompanying draW- ing, which is made a part hereof, and on which similar reference characters indicate similar parts: 7

Fig. 1 is a vertical sectional view of a concrete floor, shown in the process of construction, with the false work and form pans in perspective to illustrate the operative relationship of my improvediform pan hangers to the pans and joists of the false work;

Fig. 2 is an enlarged sectional view of one of the false work joists showing the adjustable mountingof the form pan supporting clips and means for attaching a spreader bar thereto;

Fig. 3 is a fragmentary side elevation of the joist and pan hanger shown in Fig. 2 with thepan removed from the adjustable supporting clip; and

Fig. 4 is a perspective view of one of the,

adjustable, pan supporting clips removed from the hanger strap and showing in dotted 8 lines the manner of supporting the ends of adjacent pans thereon.

In the drawing. the partsindicated as A represent the usual wooden joists which are supported by shores, not shown. These joists constitute portions of the false work, referred tom the introduction of this specification as erected between the floor levels of a building to temporarily support the removable form pans B, on'which pans concrete O, is poured to form the floor and depending, in-

tegral concrete joists. .All of these parts, not

specifically referred to herein, may be of any well-known or approved construction and design, provided they do not depart from the spirit of my invention.

Straddling each of the adjacent joists A (see Fig. 1) are strap-like hanger members 2. These hanger members'are preferably arranged at spaced intervals along each joist with the hangers of one joist disposed diametrically opposite the hangers of adjacent joists and secured in place thereon by a suitable anchoring means such as the' nail 3,

shown in Fig. 2.

The hanger straps 2 are preferably made from a strip of sheet. metal bentinto inverted U-shape formation providing a relatively short flattened central portion 4 adapted to rest upon the upper edge of ajoist, and spaced depending leg portions 5 adapted to embrace opposite sides of the joist. The legs 5-of'the hanger are each formed with a series of spaced, vertically disposed, rectangular embossed portions 6 which are slotted at opposite sides to provide laterally opening pockets 7. 5 1

To. provide simple hanger carrying means for adjustably supporting theform pans B at the desired levels and adjacent thesides of the joists A, which means may be readily removed without. mutilation to dropthe pans, I have provided; each, leg-5 of the hanger the leg 5 of a hanger 2, where the clip 8 will be vertically supported and transversely braced by the adjacent cooperating walls of the rectangular embossed portions 6 and hanger strap 2.

As it is desirable in certain construction of false work to employ spacer bars or spreader-s 12, such as are shown at intervals betweenthe wooden oists A, I have formed the downwardly turned flange 10 of each clip member 8 with an aperture 13. Apertures are also formed adjacent the ends of the spreader bars 12 to register with the apertures. in clip flanges 10 and suitable securing means such as bolts 14 are inserted through the apertures to secure the members together.

By this construction a clip member 8 may be secured to each end of a spreader bar 12 and the assembly applied as a unit between adjacent joists A by inserting the laterally turned arms 11 at each end of the bar into selected pockets 7 of the hangers 2-positioned upon the joists. Likewise, each pair of form pan supporting clips Sand attached spreader bar 12 may be removed from the laterally opening pockets 7 in the hangers, as a unit, to drop the pans after the concrete is set, by a reverse lateral movement of the assembly relative, to the hanger- Obviously, when desired, the clip members 8 may be used individually with the hanger members to support the form pan from the false workand when so used require no additional means to secure the parts in desired adjusted positions.

It is also important to note that the pan supporting clips are always movable in planes parallel to the lower edges of the pans When inserting them into the supporting pockets of hanger members and when removing them therefrom, thus greatly reducing the time and apparatus required for these operations and permitting the parts to be repeatedly used.

While I have shown and described but one embodiment of my invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made which do not depart from the spirit and scope of myinvention, as covered by the appended claims- I I claim;

hanger members laterally insertable within said portions and a supported thereby.

2. A concrete form support for open bottom pans comprising a hanger mem er having a laterally opening pocket forming portion, and a form supporting clip having a bracket arm laterally insertable within said portion and supported thereby, said clip having flange means engaging the edge of a pan to prevent transverse collapse thereof.

3. A concrete form support for open bottom pans comprising a hanger strap having a series of spaced, vertically disposed, rectangular embossed portions, said embossed portions being slotted at the sides to provide laterally opening pockets, and a form supporting and retaining clip element having a bracket arm laterally inserta'ble Within said slotted embossed portions and supported thereby.

4. Means for supporting form pans on false work joists, comprising pocketed hanger members carried by the joists, and clip elements laterally insertable Within the pockets of said hangers, each clip element having means for holding a pan 1n posltlon I thereon.

5. Means for supporting form pans on false work joists, comprisin pocketed hanger members carried by, said joists, formsupportlng clip elements each having an ofi'- set arm laterally insertable within the.

pockets of said hangers, and a spreader bar connected to adjacent clip elements between the joists, whereby a pair of clip elements may be removed from their supporting pockets as a unit to dropthe form pans.

6. Means for supporting form pans on false work joints, comprising pocketed carried by the joists, spreader bars extending between the joists, and clip elements, each element having integral means for supporting engagement with a form pan, for connection to a spreader bar and for insertion into a pocket of a hanger member.

7 In supporting means for concrete forms adapted to be setup on temporary joists, a form supporting clip element having flange means for engaging and supporting a form and a bracket arm extending at right angles to said flange means and adapted to be secured parallel with said joists.

In testimony whereof I afiix my signature.

WILLIAM G. COPESTAKE. 

